| Mobile phone interface pin | Description |
| 1 | GND |
| 2 | C-BUS |
| 4 | Battery +5V Ext |
| 5 | Data Out |
| 6 | Data In |
| 7 | GND |
| 8 | GND |
| 11 | +5V (Test) |
| 12 | RX |
| 13 | TX |
| 14 | GND |
| Mobile phone interface pin | Description |
| 1 | GND |
| 2 | C-BUS |
| 4 | Battery +5V Ext |
| 5 | Data Out |
| 6 | Data In |
| 7 | GND |
| 8 | GND |
| 11 | +5V (Test) |
| 12 | RX |
| 13 | TX |
| 14 | GND |